PHP preg_split: Split string by forward slash

Question

I want to split my string 192.168.1.1/24 by forward slash using PHP function preg_split.

My variable :

$ip_address = "192.168.1.1/24";

I have tried :

preg_split("/\//", $ip_address); 
//And
preg_split("/[/]/", $ip_address);

Error message : preg_split(): Delimiter must not be alphanumeric or backslash

I found the following answer here in stackoverflow Php preg_split for forwardslash?, but it not provide a direct answer.

`preg_split("/\//", $ip_address);` should work fine. It does for me. — Stijn Janssen, Nov 10 '15 at 10:16

score 20 · Accepted Answer · answered Nov 10 '15 at 10:13

20

Just use another symbol as delimiter

$ip_address = "192.168.1.1/24";

$var = preg_split("#/#", $ip_address); 

print_r($var);

will output

Array
(
    [0] => 192.168.1.1
    [1] => 24
)

answered Nov 10 '15 at 10:13

Alex Andrei

Not work for me: var_dump(preg_split("#/#/#","12/34/5678")); will return bool(false) – Viet Tran Aug 04 '17 at 16:12
1

if you use it like this `var_dump(preg_split("#/#","12/34/5678"));` it will return the three strings separated by `/` – Alex Andrei Aug 07 '17 at 06:59
1

For fun - see https://www.php.net/manual/en/regexp.reference.delimiters.php for the available delimiters. e.g. `var_dump(preg_split("(/)", "192.168.1.1/24"))`. – Cameron Wilby May 12 '23 at 01:27

score 6 · Answer 2 · answered Aug 04 '18 at 07:05

6

This is another way that meet up your solution

$ip_address = "192.168.1.1/24";
$var = preg_split("/\//", $ip_address);
print_r($var);

Output result

Array(
    [0] => 192.168.1.1
    [1] => 24
)

answered Aug 04 '18 at 07:05

A.A Noman

score 2 · Answer 3 · answered Aug 04 '17 at 16:28

2

You can use explode('/', "192.168.1.1/24");

answered Aug 04 '17 at 16:28

Viet Tran

I'm sorry but I wanna use `preg_split` as described in my question _using PHP function preg_split._ – Zakaria Acharki Aug 04 '17 at 16:31
Sorry, my bad. I was finding the way to split string and went to your question by google search. So I thought that you had the same problem with me. Sorry. – Viet Tran Aug 04 '17 at 17:45

3 Answers3